Hitachi vk-s454r Service Manual

Adjustment

6-1 Preparations for Adjustment

All adjustments are performed using the adjustment program (ZMAP: Zoom camera Manual Adjustment Program) and personal computer (PC). If error message appears during adjustment, refer to "6-9 Error Messages and Countermeasure".

6-1-1 List of equipment and jigs

New

Adjustment Floppy Disk (Adjustment Program)

Personal Computer (PC) [Goods on the Market]

DSP Interface Connect Jig No. 7069179

RS-232C Cable (9 or 25 pins) Straight Type [Goods on the Market]

DSP-R Jig No.7099448

*1: The adjustment floppy disk is not for sale: It will

6-1-2 List of test equipment and charts

1) Gray scale chart

2) Color bar chart

3) Backfocus chart

4) Oscilloscope

5) Vectorscope

6) Digital voltmeter (DVM)

7) 3100K light box

8) Color Monitor

9) DC power supply for the video camera

10) DC power supply for the DSP-R jig

C12 Light Balancing Filter No.7099369

be supplied only when service maintenance contract is concluded.

Gray Scale Chart

Color Bar Chart

Information:

It is recommended that you use a vectorscope when performing the chroma gain adjustment. You can use an oscilloscope instead: Note, however, that the adjustment accuracy will be lower.

Backfocus Chart

6 - 1

Adjustment > Preparations for Adjustment

6-1-3 Connections for adjustment

Connect the video camera to the test equipment and jigs as shown in Fig. 6-1-1

LIGHT BOX

DC POWER SUPPLY (9V/3A)

GND

DC POWER SUPPLY (5V/1A)

GND

VIDEO CAMERA

PG1601

DSP INTERFACE CONNECT JIG

RD WHT

SD BRW

GND BRW

+B BRW

GND BRW

VIDEO BRW

GND(VIDEO) BRW

EX. FV BRW

GND BRW

YEL

RED

9PIN FLAT CABLE (ACCESSORY)

2345

WHT BLK

VECTORSCOPE

To INPUT

To OUTPUT

OSCILLOSCOPE

CH1

CH2

When using an osilloscope only

PERSONAL COMPUTER

To VIDEO IN TERMINAL

COLOR MONITOR

BLK

DSP-R JIG

RS-232C CABLE

Fig. 6-1-1 Connections for Adjustment

Note:

1) The adjustment program will not operate normally unless the video camera, PC and DSP-R jigs are all turned on.

2) Take care with the following when pointing the video camera at a chart (light box):

a) Focus the chart correctly. b) Set the chart (light box) 30-50 cm away from the lens surface, and avoid any effects from

surrounding light (except for a case where some designation is given).

3) Be sure to connect the video output of video camera to a color video monitor (terminate the video output with 75 ohm): If the video output is not connected to the monitor (and if it is not terminated with 75 ohm), the output video signal level cannot be measured correctly.

4) Use light box that does not flicker and whose color temperature is controlled, for adjustment. If an inappropriate light box is used, precise adjustment will not be possible, and the adjustment program will not operate normally.

6 - 2

Adjustment > Preparations for Adjustment

6-1-4 Setting test equipment

(1) Oscilloscope

The names of switches, knobs, modes, etc. of oscilloscope may vary slightly depending on the manufacturer or model. Since some oscilloscopes may have switches, etc. other than the above that must be set, see the instruction manual of the particular oscilloscope for details.

1) Probe: 10:1

2) TIME/DIV: 10 or 20 µs (except for a case where some designation is given)

3) VOLTS/DIV: Will vary depending on the measurement object (except for a case where

some designation is given)

4) Synchronization: Internal sync (except for a case where some designation is given)

5) AC/DC/GND: AC (except for a case where some designation is given)

(2) Vectorscope

1) SATURATION: 75%

6-1-5 Starting adjustment program (ZMAP)

1) Connect the video camera, DSP-R jig and PC as shown in Fig. 2-1, and supply power to them. If the connection of jig, etc. is inappropriate or power is not supplied, the adjustment program will not start normally.

2) Operate the PC to start MS-DOS. For details on how to start MS-DOS, refer to the instruction manual of PC, since this varies for each PC.

3) Make sure that the adjustment floppy disk is writeprotected.

4) Insert the adjustment floppy disk into the floppy disk drive of PC.

5) Use the PC keyboard to type A: and press Enter

key. (See the MS-DOS screen-1 and 2) The letter to be input is to designate the drive into which the adjustment floppy disk has been inserted. If using a drive other than A, designate the drive.

6) Input ZMAP_2002

(space)

and press Enter

key. (See the ZMAP input screen) The number to be input after a space is to designate the serial port no. of PC. If the PC has two or more serial ports, and the DSP-R jig is connected to a port other than serial port 1, input the serial port number.

MS-DOS screen-1

Input A and press Enter key.

MS-DOS screen-2

C>A: A>

Input ZMAP_2002 (space) 1.

ZMAP input screen

C>A: A>ZMAP_2002 1

Press Enter key.

(Continued on next page)

6 - 3

Adjustment > Preparations for Adjustment

7) The ZMAP will start: Make sure that the model select screen appears on the PC display. (See the model select screen) If the model select screen does not appear, make sure of the following:

a) Power is supplied to the video camera and DSP-R jig. b) The designation of drive (in step 5) is correct. c) The designation of serial port is correct. d) The correct adjustment floppy disk has been correctly

inserted.

8) If the appropriate model is displayed on the model select screen, input the number to PC. If the appropriate model name is not shown on the model select screen, input P to PC until the model name appears. If an erroneous model name or number is selected, misoperation message will appear on PC display: Press any key to restore the model select screen.

9) The screen for verifying the model name will appear on PC display: If it is correct, input Y to PC. If it is incorrect, input N and start over (from step 8).

10) Make sure that the main menu appears on PC display: If it does not appear, check whether model selection (in step

8) is correct.

(Continued from preceding page)

Model select screen

***********************************************************

MODEL SELECT

[1] ЧЧЧЧЧЧЧЧ [2] ЧЧЧЧЧЧЧЧ [3] ЧЧЧЧЧЧЧЧ [4] ЧЧЧЧЧЧЧЧ [5] ЧЧЧЧЧЧЧЧ [P] NEXT SELECTION [ESC] END

Please select the type of the set

Press [1] - [5] or [P] or [ESC]

Model select (Input the number).

Screen for verifying model name

Selected model is ЧЧЧЧЧЧЧЧ

Are you sure ? (Y/N)

Input Y.

Main menu

***********************************************************

MANUAL ADJUSTMENT PROGRAM

***********************************************************

[A] DATA INITIALIZE [B] ELECTRIC VOLUME [C] ADJUSTMENT [D] AUTO FOCUS [E] SPOT NOISE [F] IR CONTROL [ESC] END

Please select [A] - [F] or [ESC]

To terminate the adjustment program (ZMAP):

Press the Esc key once to three times until the PC display returns from each menu screen to the MS-DOS screen. When the MS-DOS screen appears on PC display, turn off the video camera and jig.

Information

Misoperation message

CAN NOT FIND THE DATA FILE

**** PRESS ANY KEY ****

6 - 4

Adjustment > List of Adjustment Items

6-2 List of Adjustment Items

6-2-1 List of adjustments needed after replacing major

The following table shows the adjustment items, their purposes, and whether or not check is required after replacing major components. The components shown in the table below are the minimum to be checked after replacing major components: If several components have been replaced - or depending on the cause of a defect more components may need to be checked.

Table 6-2-1 List of adjustments needed after replacing major

: :

: CHECK

: :

Items Purpose Adjustment

Data Initialize

Electrical Parts

IC1001 IC1101 IC1201

IC1202 IC1250

(*1)

IC1351

Circuit

Board

PC (*1)

Other

Lens Block

Data Initilize (*2)

Electric Volume

CDS Sampling Pulse

Camera Adjustment (Adjustment)

Auto Iris

White Balance

Chroma Gain

Auto Focus

Zoom/Focus Tracking

AF Noise Level

Check of Zoom/Focus Tr ac e

Spot Noise

IR Control

Initilizing EEPROM.

To suppress noise in the CCD sensor output signal and maximize the signal level.

To set the iris control data.

To input the automatic white balance control data.

To set the color satuation under the reference color temperrature.

To set the out-of -focus correction level during zooming.

To set the noise level in the autofocus circuit.

To check the autofocus adjustment.

To correct spot noise.

IR Control To set the IR filter control data.

*1: When replacing the PC circuit board or EEPROM, be sure to perform all adjustments only after "Data

Initialize".

*2: Since all adjustments must be performed any time "Data Initialize" is done, do not perform it

indiscriminately.

6 - 5

Adjustment > List of Adjustment Items

6-2-2 Adjustment flowchart

Main menu

***********************************************************

MANUAL ADJUSTMENT PROGRAM

***********************************************************

[A] DATA INITIALIZE [B] ELECTRIC VOLUME [C] ADJUSTMENT [D] AUTO FOCUS [E] SPOT NOISE [F] IR CONTROL [ESC] END

Please select [A] - [F] or [ESC]

Input: A Input: B Input: C

Data initialize

<< DATA WRITING >>

START TO SEND DATA. (Y/N)

Note:

Refer to "6-3 Data Initialize".

Input: 1

Auto Iris Control

ADJUSTMENT FINISHED

PRESS ANY KEY

Electrical volume Adjustment

***********************************************************

Input: 1

ELECTRIC VOLUME

[1] CDS SAMPLING PULSE [ESC] RETURN TO MAIN MENU

Please select [1] or [ESC]

Input: 2

[For VK-S274R/S274ER]

Adjustment menu

***********************************************************

[1] AUTO IRIS CONTROL [2] WHITE BALANCE [3] CHROMA GAIN [ESC] RETURN TO MAIN MENU

Please select [1] - [3] or [ESC]

Input: 3

White Balance Chroma Gain

<< ADJUSTMENT OF WHITE BALANCE >>

ADJUSTMENT FINISHED

PRESS ANY KEY

<< ADJUSTMENT OF CHROMA GAIN >>

ROUGH ADJUSTMENT [U] CHROMA GAIN UP [D] CHROMA GAIN DOWN

FINE ADJUSTMENT [Crt] + [U] CHROMA GAIN UP [Crt] + [D] CHROMA GAIN DOWN

[ENTER] SAVE & RETURN TO MENU [ESC] QUIT

Adjust: Set the red vector to

240% ± 5% of burst vector.

<< ADJUSTMENT OF CHROMA GAIN >>

DATA WRITING INTO EEPROM

<< ADJUSTMENT OF CHROMA GAIN >>

ADJUSTMENT FINISHED

ADJUSTMENT

PRESS ANY KEY

Input: D Input: E

Auto Focus

AF menu

***********************************************************

AUTO FOCUS ADJUSTMENT

*********************************************************** [1] ADJUSTMENT OF ZOOM/FOCUS TRACKING

[2] ADJUSTMENT OF AF NOISE LEVEL [3] CHECK OF ZOOM/FOCUS TRACE [ESC] RETURN TO MENU

Please select [1] - [3] or [ESC]

Input: 1, 2 or 3

Input: Y

Fig. 6-2-1 Adjustment Flowchart

Spot Noise

<< DATA WRITING >>

START TO SEND DATA. (Y/N)

FINISHED WRITING DATA

PRESS ANY KEY

6 - 6

Input: F

IR Control

FINISHED WRITING DATA

PRESS ANY KEY

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